RunRyder RC
WATCH
 1 page 609 views POST REPLY
HomeRC & PowerAircraftHelicopterFlybarless Rotor Head SystemsOther › RJX Head crash question
10-13-2010 08:17 PM  8 years agoPost 1
jbiter

rrKey Veteran

Sebring, FL

My Posts: All  Forum  Topic

Hi All,

I have been considering buying some spares for my 600 size RJX FBL heads. For those that have flown this head a while, do you think it is worthwhile to buy a spare head block? The 8mm spindle did not bend on my last upgrade opportunity and it got me wondering if I might bend a head block instead.

What do you think?

Jeff

PM  EMAIL  GALLERY  Attn:RR  Quote
10-13-2010 09:20 PM  8 years agoPost 2
fastflyer20

rrKey Veteran

N. Tonawanda, NY

My Posts: All  Forum  Topic

I have 100's of flights on mine, and 4 crashes, no super direct hits to the head. The screws holding the arms loosened and the mr688 bearings take the knock, no other parts have needed to be replaced (yet). Based on what I have seen, the arms are the weak link, possible "protecting" the feathering shaft. It has a great clamping system to the main shaft, superior to the Align heads that keep the rotor head clamping in good shape. Watch the small screws holding the arms to the rotor head, clean well, use loc-tite and make sure the shorter of the two screws does not extend into the bore, putting pressure on the thrust bearing race.

Stock mr688 bearings, even a light blade strike and at least one or two bearings will be notchy.

PM  EMAIL  GALLERY  Attn:RR  Quote
10-13-2010 09:45 PM  8 years agoPost 3
jbiter

rrKey Veteran

Sebring, FL

My Posts: All  Forum  Topic

Interesting. My upgrade opportunity came while I was flying around the property and switched flight modes causing the heli to rapidly climb into a tree. A 50 size heli turning 2000 RPM will lop off 1" branches with ease. Interesting enough it didn't cause any damage to the head including the bearings but the blades were toast.

I began to wonder about the head block as this is a problem with the 450V2 and newer helis once they increased the spindle size in those.

Jeff

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 1 page 609 views POST REPLY
HomeRC & PowerAircraftHelicopterFlybarless Rotor Head SystemsOther › RJX Head crash question
 Print TOPIC  Make Suggestion 

 1  Topic Subscribe

Tuesday, December 11 - 7:41 am - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

The RC discussion world needs to consolidate. RR is now one choice for that. Its software is cutting edge. It hosts on-topic advertising. Help RR increase traffic buy making suggestions, posting in RR's new areas (sites) and by spreading the word.

The RunRyder Difference

• Category system to allow Rep/Vendor postings.
• Classifieds with sold (hidden) category.
• Classifieds with separate view new.
• Answer PMs offsite via email reply.
• Member gallery photos with advanced scripting.
• Gallery photo viewer integrated into postings.
• Highly refined search with advanced back end.
• Hosts its own high end fast response servers.
• Hosts thousands of HD event coverage videos.
• Rewrote entire code base with latest technology.
• No off-topic (annoying) click bait advertising.
Login Here
 New Subscriptions 
 Buddies Online